Assuming the starting height a 0.0 m, calculate the potential energy of the cart after it has been elevated to a height of 1.0 m above the starting location. please show your work

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i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

a is the best answer your welcome